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Finding the Fourth Proportional to 573,105.68, 790,870.14 and 318,450.32

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Solution

The fourth proportional to 573,105.68, 790,870.14 and 318,450.32 is: 439,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,105.68 : 790,870.14 = 318,450.32 : x
  2. Step 2: Convert to fraction form
    573,105.68/790,870.14 = 318,450.32/x
  3. Step 3: Cross multiply
    573,105.68x = 790,870.14 × 318,450.32
  4. Step 4: Simplify right side
    573,105.68x = 251,852,849,161.45
  5. Step 5: Solve for x
    x = 251,852,849,161.45/573,105.68
  6. Step 6: Final answer
    x = 439,452.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.